IV, 224: Herder calls Leibniz the greatest man that Germany has produced in later times.
IV, 361: Herder calls Leibniz and Plato the two greatest heads for hypotheses.
VIII, 178: Herder says that no one says it better than Leibniz, that bodies as such are only phenomena of substances, as the Milky Way is of stars and the clouds of drops.
IX, 493: Herder regrets that Leibniz was not sufficiently appreciated by the Germans; most of them in the city in which he lies did not even know where his grave was.
IX, 534: Herder cites Leibniz as saying that human wit and humor are never more effective than in play, and uses this in support of his own belief that the human heart expresses itself most effectively in the nature songs of primitive people.
X, 305: Herder sees the flower of Leibniz in Shaftesbury.
XIII, 199: Herder agrees with Leibniz that the soul is a mirror of the “world-all” and he believes there is a deeper truth in Leibniz’ statement than is usually recognized; i.e., all the forces of a “world-all” lie hidden in the soul, and they need only an organization or a succession of organizations to set them into activity.
XIV, 417: Herder finds support in Leibniz for the statement that the Catholic Church considered the king a protective magistrate under the supremacy of the Pope.
XV, 180: Herder says Leibniz pointed out weak sides of Locke’s philosophy.